Motor Control Commons^™

Finite Element Analysis Of Femoral Neck Strains During Stair Ascent And Descent, Chen Deng, Jason C. Gillette, Timothy R. Derrick

Kinesiology Publications

For older population, a better understanding of the hip joint loading environment is needed for the prevention of hip pain, and the reduction of the stress fractures and fall risks. Using the motion analysis and inverse dynamics methods, combined with musculoskeletal modelling, static optimization, and finite element (FE) femur model, the difference of femoral neck strains between stair ascent vs. descent, young vs. older populations was compared. A two-way repeated-measures MANOVA was applied to test the effect of age and stair direction on the femoral neck strains. The strains at the femoral neck cross-section were greater for stair descent than ...

Post-Activation Potentiation Induced By Concentric Contractions At Three Speeds In Humans, Alexander Zero

Electronic Thesis and Dissertation Repository

Post-activation potentiation (PAP) is the acute enhancement of contractile properties following a short duration (<10s) high intensity contraction. Compared with isometric contractions, little is known about the PAP response induced by concentric conditioning contractions (CCs) and the effect of contractile speeds. In the dorsiflexors of 10 participants, twitch responses were measured following 5s of maximal effort concentric CCs at each of 10, 20 and 50°/s. Concentric PAP responses were compared to a maximal isometric voluntary contraction (MVC) matched for contraction time. Additionally, concentric CCs were compared to isometric CCs matched for mean torque, contraction area and time. The principal finding was that the PAP response following maximal concentric CCs was independent of contractile speed and, there was no difference in the PAP response between concentric CCs and an isometric MVC. Maximal contractions, regardless of contraction modality, likely produce sufficient Ca²⁺ to induce a full PAP response, and thus there was no difference between speeds or contraction type. Concentric CCs had significantly larger peak twitch torque than their isometric torque matches (49-58%), and faster maximal rates of torque development at the three speeds (62-77%). However, these responses are likely related to greater muscle activation (EMG), and not contraction modality per se. Thus, PAP responses following maximal concentric CCs are not affected by velocity and responses are not different from an isometric MVC. This indicates maximal CCs ...

Lower Extremity Musculoskeletal Screening Tool Practices Among Athletic Trainers In Secondary School And Collegiate Settings, Megan B. Fowler, Elizabeth R. Neil, Cameron J. Powden

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

Purpose: Musculoskeletal (MSK) screening tools can allow athletic trainers (AT) to focus prevention efforts by providing patient risk information. The purpose of this study is to examine lower extremity MSK screening tool practices and perceptions of ATs in traditional settings. Methods: A cross-sectional online survey was distributed to 4,937 full- and part-time collegiate and secondary school ATs randomly selected by the NATA. MSK screening tools were grouped into 7 categories: Range of Motion (ROM), Strength, Balance, Drop and Jump Landing (D/J Land), Double- and Single-Leg Hopping (D/S Hop), Movement Quality (MQual), and Injury History (History). For ...

Indiana Secondary School Athletic Directors Perceptions Of Athletic Training Services And Influences On Hiring Athletic Trainers, Thomas J. Greffly, Matthew Rivera, Lindsey E. Eberman

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

Indiana Secondary School Athletic Directors Perceptions of Athletic Training Services and Influences on Hiring Athletic Trainers

Purpose: The purpose of this investigation was to examine ADs perceptions on satisfaction of current care provided, factors influencing the hiring of ATs, and the roles and responsibilities of ATs.

Methods: We used a mixed methods design with an online survey (Qualtrics^®, Provo, UT), which we distributed to Indiana secondary school ADs (n = 410) with publicly available emails. The survey remained open for 5 weeks with reminder emails sent weekly. We used a panel (n=2) with experience in survey research and/or the ...

Examination Of Anger Prevalence In Ncaa Division I Student-Athletes, Robert Madden, Zachary K. Winkelmann, Samantha R. Weber, Erin M. Moore, Toni M. Torres-Mcgehee

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

Purpose: Anger associated with sports participation may affect inability to acutely process anger, may decrease performance and increase the likelihood of risk-taking behavior in collegiate athletes. Therefore, the purpose was to examine the prevalence of anger in collegiate student-athletes across sex, academic status, and sport type. Methods: A cross sectional study over a three-year period examined 759 NCAA Division I student-athletes at one institution (age=20±1 years; males: n=259; females: n=500) completed an optional pre-participation behavioral health screening questionnaire, personal demographic information and the Anger Index Self-Test. Results: Overall, 37.2% (n=282/759; males=127/259 ...

Important Updates To Submission Types In Topics In Exercise Science And Kinesiology, James W. Navalta, Donald L. Hoover, Robert Salatto, Whitley J. Stone, Scott Lyons

Topics in Exercise Science and Kinesiology

Topics in Exercise Science and Kinesiology Volume 2: Issue 1, Article 1, 2021. While Topics in Exercise Science and Kinesiology (TESK) was originally designed to fill a void in publishing applied information for practitioners in physical activity and sport, the TESK editors have determined a need to update the submission categories. The categories of Process of Science and Implementation Strategies have been retained, and three new types of submissions now will be accepted: Expedited Articles, Review Articles, and Case Studies. Process of Science submissions should seek to answer the question, “What was learned from the experience of performing the investigation ...

Power Amplification Strategies Across Animals, Rayhan Asif

Williams Honors College, Honors Research Projects

Animals use muscles for movement, but some have evolved mechanisms to exceed maximum power used in a motion known as power amplification. In this literature review, I analyzed and compared the evolution of structures capable of power amplification between species. Structures capable of power amplification were broken down into the basic components of the engine, amplifier, and tool. The species analyzed were found to possess necessary structures for power amplification which were relatively similar to each other in morphology, but varied greatly in function. The ease with which these structures evolved was evaluated based on the amount of divergence which ...

Recurrent Patellar Fracture In A Healthy Collegiate Basketball Player: An Exploration Clinical Case Report, Mikaela Boham, Jerry Hilker

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

Recurrent Patellar Fracture in a Healthy Collegiate Basketball Player: An Exploration Clinical Case Report

ABSTRACT

Purpose: Patellar fractures only account for approximately 1% of all skeletal injuries. Patellar fractures usually result from direct trauma (i.e. falling on the knee, dashboard injury, etc.), or, less frequently, occur as a combination of direct and indirect mechanism (i.e. receiving a direct blow while contracting the quadriceps). While indirect trauma is the least common mechanism, it usually occurs due to an extensor mechanism failure during eccentric loading such as landing. Method: Case report, Level 3: Exploration Clinical Contribution to the Available Sources ...

Effects Of Caffeinated And Non-Caffeinated Gum On Premotor, Motor, And Overall Reaction Time, Ashton E. Holliday, Maelee A. Wells, Rebecca R. Rogers, Joseph A. Pederson, Tyler Williams, Christopher G. Ballmann

Topics in Exercise Science and Kinesiology

• Chewing gum and caffeine when used independently and concurrently increase neural activity ultimately improving reaction time but less is known about how caffeinated gum influences distinct phases of the reaction time response.
• Physically active college females (n=14) completed a 60-second reaction time test on a visuomotor board under the following counterbalanced conditions: 1) Baseline, 2) Non-caffeinated gum, 3) Caffeinated gum (300 mg caffeine).
• Point of application #1: Chewing gum improved premotor reaction time compared to baseline, but caffeine did not provide additional benefit.
• Point of application #2: Neither non-caffeinated nor caffeinated gum improved motor reaction times from baseline.
• Point ...

Effects Of Levodopa On Impairments To High-Level Vision In Parkinson's Disease, Stephen Anderson, Elizabeth L. Stegemoller

Kinesiology Publications

Studies have reported that Parkinson's disease (PD) is associated with impairments on cognitive visual tasks. However, the effects of dopamine on cognitive vision remain equivocal. The purpose of this study was to examine performance on cognitive vision tasks in persons with PD and the effects of levodopa on these tasks. Fourteen individuals with PD and 14 age- and sex-matched healthy older adults completed the study. Participants with PD completed the visual tasks following a 12-h withdrawal of dopaminergic medication and again 1 h after taking 1.5 times their normal dose of levodopa. Healthy older adults completed the visual ...

Contribution Of Velocity Congruency And Apparent Stiffness To Interference Of Bimanual Rhythmic-Discrete Movements., Marcelline E. Dechenaud

LSU Master's Theses

Many actions feature rhythmic and discrete movements, individually or in combinations. Rhythmic movements are defined as those having no clearly defined start and end-point, while discrete movements have a definite starting and ending posture. Performing a discrete movement against a base rhythm by the contralateral limb typically speeds up the rhythmic movement -- indicating the presence of bimanual coupling. While bimanual rhythmic/rhythmic interaction has been studied extensively in the field, understanding of the interaction between discrete and rhythmic movements has been less represented. In this thesis, I examined two potential sources of interlimb interference during rhythmic-discrete bimanual actions: 1) velocity ...

Eye-Hand Coordination Varies According To Changes In Cognitive-Motor Load And Eye Movements Used, Matthew Alan Yeomans

LSU Doctoral Dissertations

In this dissertation three studies were used to help improve the understanding of eye- hand coordination control of visuomotor reaching tasks with varying cognitive loads. Specifically, we considered potential performance differences based on eye-movements, postural influences, as well as fitness level of the young adult participants. A brief introduction in chapter 1 is followed by a detailed literature review in chapter 2. Results from the three studies presented in chapter’s 3-5 further advance our knowledge of the integrated control used for goal-directed visually-guided reaches. In the first study (chapter 3), the additional cost associated with the use of smooth ...

Efficient Method Of Delivery For Powdered Supplement Or Placebo For An Outdoor Exercise Investigation, R W. Salatto, Dustin W. Davis, Bryson Carrier, Brenna Barrios, Jacquelyn Sertic, Peyton Cater, James W. Navalta

Topics in Exercise Science and Kinesiology

• Researchers often encounter issues while attempting to deliver complete doses of a desired supplement/placebo when conducting research in outdoor environments. The problem faced by our research team was how to efficiently deliver 6.4 grams of Beta Alanine (BA) powder to subjects while conducting a hiking study on a windy trail in Southern Utah. To minimize the potential impact of the weather, and to maximize the efficiency of delivery, we determined a premixed bolus of BA contained in individual commercially available 8oz water bottles was the most efficient delivery method. The purpose of this article is to detail the ...

Effect Of Ankle Joint Position On Triceps Surae Contractile Properties And Motor Unit Discharge Rates, Kalter Hali

Electronic Thesis and Dissertation Repository

The length-tension relationship of the triceps surae (TS) can be altered by changing the knee joint position, ankle joint position or both. However, studies exploring the effect of muscle length on triceps surae (TS) neuromuscular properties have focused only on changes in knee joint position, affecting only two of the three muscle components of the TS. Thus, the purpose of this study is to compare the neuromuscular properties of the three TS muscles during plantar flexion contractions at two ankle joint positions, 20° dorsiflexed (DF) and 20° plantar flexed (PF). Maximal isometric voluntary strength (MVC), voluntary activation, and evoked contractile ...

High School Student-Athletes' Parents Show Limited Understanding Of Qualifications And Skills Of Athletic Trainers, Taylor Flanigan, Erika Smith-Goodwin, Jennifer Walker

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

Please enjoy Volume 6, Issue 1 of the JSMAHS. In this issue, you will find Professional, Graduate, and Undergraduate research abstracts, and case reports.

Thank you for viewing this 6^th Annual OATA Special Edition.

Do High Amounts Of Stress And Anxiety Lead To A Higher Injury Rate Among Student Athletes?, Meghan Koch, Jennifer Walker, Erika Smith-Goodwin

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

Please enjoy Volume 6, Issue 1 of the JSMAHS. In this issue, you will find Professional, Graduate, and Undergraduate research abstracts, and case reports.

Thank you for viewing this 6^th Annual OATA Special Edition.

Athletic Trainers Provide A Positive Outlet To Athletes'' Injuries And Mental State During Summer Travel Baseball Season, Jeffrey Clydesdale, J. Brett Massie, Erika Smith-Goodwin

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

Please enjoy Volume 6, Issue 1 of the JSMAHS. In this issue, you will find Professional, Graduate, and Undergraduate research abstracts, and case reports.

Thank you for viewing this 6^th Annual OATA Special Edition.

Correlation Between Playertek Performance Data And Fatigue As Measured By The Restq-76 Sport Over The Course Of A Collegiate Soccer Season, Miranda Haas, Hailey Bauer, Victoria Nye, Danielle Kilboy, Shelley Payne

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

Please enjoy Volume 6, Issue 1 of the JSMAHS. In this issue, you will find Professional, Graduate, and Undergraduate research abstracts, and case reports.

Thank you for viewing this 6^th Annual OATA Special Edition.

The Comfort Level Of High School Athletic Trainers When Dealing With Mental Health Conditions, Kassidy Esser, Erika Smith-Goodwin, Jennifer Walker

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

Please enjoy Volume 6, Issue 1 of the JSMAHS. In this issue, you will find Professional, Graduate, and Undergraduate research abstracts, and case reports.

Thank you for viewing this 6^th Annual OATA Special Edition.

The Effect Of An In-Season Knee Injury Prevention Program On Lower Extremity Injury Risk Factors On Collegiate Women's Basketball Players, Abigail Scholz, Tanner German, Colton Miles, Shelley Payne

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

Please enjoy Volume 6, Issue 1 of the JSMAHS. In this issue, you will find Professional, Graduate, and Undergraduate research abstracts, and case reports.

Thank you for viewing this 6^th Annual OATA Special Edition.